B1 verb #45 よく出る 4分で読める

mutter

To speak in a very quiet, low voice that is hard to understand.

Explanation at your level:

Mutter means to talk very, very quietly. You do this when you are sad or angry. You do not want people to hear you. If you mutter, your mouth does not open much. It is like a secret sound. You can mutter when you are alone. You can mutter when you are mad at a friend. It is a quiet way to speak.

When you mutter, you speak in a low voice that is hard to hear. People often mutter when they are annoyed or embarrassed. For example, if you are unhappy about a chore, you might mutter about it under your breath. It is not the same as whispering, which is usually for secrets. Muttering is usually for complaining or talking to yourself.

To mutter is to speak in a low, indistinct voice. It is frequently used to describe speech that is unclear because the person is frustrated or upset. Unlike whispering, which is intentional, muttering often happens when we are venting our annoyance. You might hear someone mutter a complaint when they are asked to do extra work. It is a common way to express dissatisfaction without causing a confrontation.

Muttering is a verb that describes a specific type of vocalization: low-volume, muddled, and often surreptitious. It is highly nuanced, usually signaling that the speaker is disgruntled or talking to themselves. In literature, authors use this word to establish a character's internal state, showing their reluctance to speak openly. It sits between 'mumbling' (which is just unclear) and 'grumbling' (which implies a specific tone of complaint).

The verb 'mutter' functions as a subtle marker of social friction. It denotes speech that is deliberately or unconsciously obscured, often as a mechanism for expressing dissent without the social cost of a direct confrontation. In academic or professional settings, a 'muttered comment' can be a sign of passive-aggressive behavior or a lack of confidence. The word carries a connotation of secrecy and suppressed emotion, distinguishing it from other verbs of quiet speech like 'murmur' (which can be gentle) or 'whisper' (which is often intimate).

Etymologically rooted in the onomatopoeic tradition, 'mutter' serves as a precise descriptor for speech that lacks the clarity of articulation. It is frequently employed in narrative contexts to convey the psychological weight of a character's discontent. Unlike the more neutral 'mumble,' 'mutter' carries a distinct semantic charge of irritation or resentment. It is the vocal equivalent of a shrug or a scowl. Mastery of this word involves recognizing its role in social dynamics—it is the sound of the 'undercurrent' in a conversation, where the speaker acknowledges the presence of others but refuses to engage with them fully or clearly.

30秒でわかる単語

  • Mutter means to speak in a low, quiet voice.
  • It is usually used to express annoyance or frustration.
  • It is often done 'under one's breath'.
  • It is an onomatopoeic word.

Have you ever felt so annoyed that you wanted to say something, but you didn't want to get in trouble for it? That is when you mutter! When you mutter, you speak in a very low, quiet voice that is difficult for other people to understand.

It is not just about being quiet, though. Muttering usually carries a specific mood. People often mutter when they are feeling grumpy, embarrassed, or just talking to themselves. It is the classic sound of someone grumbling under their breath because they disagree with something but don't want to start an argument.

Think of it as the opposite of shouting. While shouting is meant to grab attention, muttering is almost meant to avoid it. It is a very human way to let off a little bit of steam without making a big scene.

The word mutter has a fascinating history that goes all the way back to Middle English. It evolved from the Middle English word moteren, which was likely influenced by Middle Dutch or Middle Low German words like muteren.

What is really cool is that it is an onomatopoeic word. That means the word itself sounds like the action it describes! The 'm' and 't' sounds mimic the soft, muffled, and repetitive nature of someone speaking without opening their mouth very wide. It is a linguistic cousin to words like 'mumble' and 'murmur'.

Over the centuries, the meaning has stayed quite consistent. It has always been associated with speech that is low, indistinct, and often secretive. It is a perfect example of how our ancestors created words that naturally captured the sounds of everyday life.

You will most often hear mutter used in situations where someone is unhappy. Common collocations include mutter under one's breath or mutter a complaint. It is a great verb to use when you want to describe someone who is being passive-aggressive.

In terms of register, it is generally considered neutral to informal. You might see it in a novel to describe a character's internal frustration, or hear it in a workplace when a colleague is annoyed by a new policy. It is not usually used in very formal, high-stakes speeches unless the speaker is intentionally trying to show they are disgruntled.

Remember that muttering implies a lack of clarity. If someone is speaking quietly but you can hear every word perfectly, you might say they are 'whispering' instead. Muttering is specifically about that muffled, low-energy sound.

1. Mutter under one's breath: To speak very quietly so that people can't hear you clearly, usually to show annoyance. Example: 'He muttered under his breath about the long wait.'

2. A muttered apology: An apology said so quietly it sounds insincere. Example: 'She gave a muttered apology and walked away.'

3. Muttering to oneself: Talking quietly while alone. Example: 'The old man was muttering to himself as he walked down the street.'

4. Mutter dark threats: To say scary or negative things in a low voice. Example: 'The villain muttered dark threats as he left the room.'

5. Muttered complaints: Small, quiet expressions of dissatisfaction. Example: 'There were muttered complaints from the staff about the new schedule.'

Mutter is a regular verb. Its past tense and past participle forms are simply muttered, and the present participle is muttering. It is typically used as an intransitive verb, though it can take an object if you are muttering a specific phrase.

In terms of pronunciation, the IPA for both UK and US English is /ˈmʌtər/. The stress is on the first syllable: MUT-er. A common trap for learners is to over-pronounce the 't' sound; in natural speech, it often sounds like a soft, flapping 'd' in American English.

It rhymes with words like butter, clutter, gutter, shutter, and flutter. Notice how all these words share that short 'u' sound followed by the 't' and 'er' ending, which gives them all a very similar rhythmic feel.

Fun Fact

The word is onomatopoeic, mimicking the sound of low, indistinct speech.

Pronunciation Guide

UK /ˈmʌtə/

Short 'u' sound, soft 't', and a silent 'r' at the end.

US /ˈmʌtər/

Short 'u' sound, 't' sounds like a quick 'd', and a clear 'r' at the end.

Common Errors

  • Pronouncing the 't' too hard
  • Adding an extra syllable
  • Confusing the 'u' sound with 'o'

Rhymes With

butter clutter gutter shutter flutter

Difficulty Rating

読解 2/5

Easy to read

Writing 2/5

Easy to use in sentences

Speaking 2/5

Easy to pronounce

リスニング 3/5

Can be hard to hear in movies

What to Learn Next

Prerequisites

speak quiet say

Learn Next

grumble mumble murmur

上級

articulate elucidate vociferate

Grammar to Know

Verb Tenses

mutter/muttered/muttering

Intransitive Verbs

He muttered.

Prepositional Phrases

mutter under one's breath

Examples by Level

1

He likes to mutter.

He likes to speak quietly.

Verb + to + verb.

2

Do not mutter.

Speak clearly.

Imperative form.

3

She muttered a word.

She said it quietly.

Past tense.

4

I heard him mutter.

I heard him speak low.

Verb + object + verb.

5

They mutter often.

They do it a lot.

Frequency adverb.

6

Why did you mutter?

What was the reason?

Question form.

7

She muttered 'no'.

She said no quietly.

Direct speech.

8

He is muttering.

He is doing it now.

Present continuous.

1

He muttered under his breath when he lost the game.

2

Please don't mutter, I can't understand you.

3

She muttered an excuse and left the room.

4

The students muttered about the difficult test.

5

I heard him mutter something about the rain.

6

Why are you muttering to yourself?

7

He muttered a quick goodbye and ran away.

8

They were muttering in the corner.

1

He was muttering complaints about the long meeting.

2

She muttered a few words of apology to her boss.

3

The crowd began to mutter when the show was delayed.

4

Stop muttering and tell me what is wrong.

5

He muttered something incoherent before falling asleep.

6

She muttered a prayer under her breath.

7

The employees were muttering about the new policy.

8

I caught him muttering to himself in the hallway.

1

He muttered a cynical remark as he walked past.

2

There was a lot of muttering among the staff regarding the layoffs.

3

She muttered her disagreement, but not loud enough for him to hear.

4

The old man sat on the bench, muttering to the pigeons.

5

He muttered a curse when he dropped his coffee.

6

The team muttered their approval, though they weren't convinced.

7

She muttered a soft thanks as she took the gift.

8

His muttered response made it clear he was not happy.

1

The politician muttered a dismissive comment about the opposition.

2

A collective muttering rippled through the audience.

3

He muttered under his breath, a habit born of years of frustration.

4

She muttered an incantation, her eyes fixed on the fire.

5

The rumors were muttered in hushed tones throughout the city.

6

He muttered a half-hearted apology that fooled no one.

7

Despite the danger, he muttered a challenge to the guard.

8

The professor muttered to himself while grading the papers.

1

The conspirators muttered their plans in the shadows of the alley.

2

He muttered a litany of grievances against the establishment.

3

The poet muttered verses into the cold night air.

4

Her muttered words were lost in the roar of the storm.

5

He was known for muttering dark, enigmatic prophecies.

6

The courtroom was filled with the sound of muttering spectators.

7

She muttered her final farewell, barely audible above the wind.

8

The history of the revolution was muttered in secret for decades.

よく使う組み合わせ

mutter under one's breath
mutter a complaint
mutter an apology
mutter to oneself
muttered words
muttered response
mutter a curse
mutter in agreement
mutter about
mutter quietly

Idioms & Expressions

"mutter under one's breath"

to speak quietly to show annoyance

He muttered under his breath during the speech.

neutral

"not a mutter"

complete silence

There wasn't a mutter from the crowd.

casual

"muttering in the ranks"

discontent among a group

There is some muttering in the ranks about the new rules.

formal

"mutter a protest"

to make a quiet objection

He muttered a protest but did as he was told.

neutral

"mutter a prayer"

to say a prayer quietly

She muttered a prayer for his safety.

neutral

"mutter a threat"

to say something threatening quietly

He muttered a threat before walking away.

neutral

Easily Confused

mutter vs mumble

both involve quiet speech

mumble is about articulation, mutter is about tone/annoyance

He mumbled his words (unclear). He muttered his complaint (annoyed).

mutter vs whisper

both are quiet

whisper is for secrets, mutter is for annoyance

She whispered a secret. He muttered a complaint.

mutter vs stutter

similar spelling

stutter is a speech impediment

He stuttered when he was nervous.

mutter vs murmur

similar meaning

murmur is softer and often continuous

The crowd murmured in the distance.

Sentence Patterns

A2

Subject + mutter + about + noun

He muttered about the weather.

B1

Subject + mutter + [quote]

She muttered, 'This is unfair.'

B1

Subject + mutter + under + possessive + breath

He muttered under his breath.

A2

Subject + mutter + to + oneself

He was muttering to himself.

B2

Subject + mutter + a + noun

She muttered a quick goodbye.

語族

Nouns

mutter a low, indistinct sound of speech

Verbs

mutter to speak in a low voice

Adjectives

muttered spoken in a low voice

関連

mumble synonym
murmur synonym

How to Use It

frequency

7

Formality Scale

formal: murmur neutral: mutter casual: mumble slang: gripe

よくある間違い

Using 'mutter' when you mean 'whisper' whisper
Whispering is for secrets; muttering is for annoyance.
Confusing 'mutter' with 'stutter' stutter
Stuttering is a speech impediment; muttering is a volume issue.
Muttering to someone directly speaking clearly
Muttering is usually not intended for the listener.
Using 'mutter' for loud speech shout/yell
Muttering is by definition quiet.
Forgetting the 'er' ending mutter
Ensure the spelling is correct.

Tips

💡

Memory Palace Trick

Imagine a grumpy person muttering in the corner of your room.

💡

When Native Speakers Use It

When they are annoyed but don't want to start a fight.

🌍

Cultural Insight

It is often associated with the 'grumpy' archetype.

💡

Grammar Shortcut

Use it with 'under one's breath' for a natural sound.

💡

Say It Right

Keep the 'u' short and the 't' soft.

💡

Don't Make This Mistake

Don't confuse it with 'stutter'.

💡

Did You Know?

It is an onomatopoeic word!

💡

Study Smart

Use it in a sentence about a time you were annoyed.

💡

Rhyme Time

Practice rhyming it with 'butter' to get the rhythm.

💡

Register Check

Use it in casual or neutral contexts.

Memorize It

Mnemonic

Mutter sounds like 'mumble' + 'grumble'.

Visual Association

Imagine a grumpy person with their mouth barely open.

Word Web

grumble complain quiet indistinct annoyance

チャレンジ

Try muttering a sentence under your breath and then saying it clearly.

語源

Middle English

Original meaning: To speak in a low voice

文化的な背景

None, though it can be considered rude if done while someone else is speaking.

Muttering is often seen as a sign of being 'grumpy' or 'passive-aggressive' in Western cultures.

Often used in literature to describe a character's internal conflict. Common in films to show a villain's frustration.

Practice in Real Life

Real-World Contexts

at work

  • muttering about the boss
  • muttered a complaint
  • muttered under my breath

at school

  • muttering about homework
  • muttered an answer
  • muttered to a friend

at home

  • muttering to myself
  • muttered a response
  • muttered about chores

in public

  • muttering in the crowd
  • muttered a curse
  • muttered an apology

Conversation Starters

"Have you ever muttered something you shouldn't have?"

"Do you think muttering is rude?"

"Why do people mutter when they are alone?"

"What is the most annoying thing people mutter about?"

"Can you tell the difference between muttering and whispering?"

Journal Prompts

Describe a time you were so annoyed you had to mutter to yourself.

Why do you think we mutter instead of speaking clearly?

Write a short story where a character mutters a secret.

How does muttering change the way people perceive you?

よくある質問

8 問

Yes, it can be seen as rude if done while someone else is speaking.

No, muttering is by definition unclear.

Yes, it follows standard conjugation rules.

They are very similar, but mumble often refers to poor articulation, while mutter refers to quiet, often annoyed speech.

You can, but whispering is more common for secrets.

Yes, many people do this when thinking.

As a verb, it does not have a plural form.

It is a soft, unstressed sound at the end of the word.

自分をテスト

fill blank A1

He likes to ___ when he is sad.

正解! おしい! 正解: mutter

Mutter fits the context of quiet speech.

multiple choice A2

Which of these means to speak very quietly?

正解! おしい! 正解: mutter

Mutter is the only option meaning quiet speech.

true false B1

Muttering is usually very loud.

正解! おしい! 正解: 間違い

Muttering is by definition quiet.

match pairs B1

Word

意味

All matched!

Matching verbs to their volume.

sentence order B2

下の単語をタップして文を組み立てよう
正解! おしい! 正解:

Correct structure for the idiom.

fill blank B2

She ___ a quick apology and left.

正解! おしい! 正解: muttered

Muttered fits the context of a quick, quiet apology.

multiple choice C1

What is the best synonym for mutter?

正解! おしい! 正解: murmur

Murmur is the closest synonym.

true false C1

Muttering is often used to show happiness.

正解! おしい! 正解: 間違い

Muttering usually shows annoyance.

match pairs C2

Word

意味

All matched!

Distinguishing between clarity levels.

sentence order C2

下の単語をタップして文を組み立てよう
正解! おしい! 正解:

Standard sentence construction.

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